Solve the problem.A tree grows vertically on the side of a hill that slopes upward from the horizontal by 8.3°. When the angle of elevation of the sun measures 59.4°, the shadow of the tree falls 39.2 ft down the hill. How tall is the tree? Round to an appropriate number of significant digits.
A. 66.3 ft
B. 233.7 ft
C. 59.9 ft
D. 11.1 ft
Answer: C
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Use scientific notation to solve the problem.The distance from the earth to the sun is 92,900,000 miles. How long would it take a rocket, traveling at 2.9 x 103 miles per hour, to reach the sun?
A. 3.2 x 104 hr B. 3.2 hr C. 3.2 x 102 hr D. 3.2 x 103 hr
Evaluate the derivative of the given function for the given value of x.y = (9x - 2)(6 - 2x), x = 7
A. -488 B. -80 C. -194 D. 50
Convert the angle in radians to degrees.- 
A. -227° B. -225° C. -224° D. -226°
Solve the problem.A rectangular piece of cardboard measuring 30 inches by 36 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. What is the maximum volume of this box? If necessary, round to 2 decimal places.
A. 1155.68 in3 B. 2612.81 in3 C. 148.81 in3 D. 36,381.59 in3